Improvement in lamp-buehees



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GEORGE NEILSONgOF BOSTON, MASSACHUSETTS. Letters Patent No. 65,933, dated June 18, 1867.

IMPROVEMENT Ill LAMP-BURNBRS.

TO WHOM IT MAY CONCERN:

Be it known that I, GEORGE NEILSON, of Boston, in the county of Suti'olk, and State of Massachusetts, have invented certain new and useful Improvements in Burners for Hydrocarbon Fluids; and I hereby declare the following to be a full, clear, and exact description of the same, reference being bad to the accompanying drawings, in which- Figure 1 is a perspective view, and

Figure 2 a vertical central section of a burner constructedin accordance with my improvements.

In lamps in which hydrocarbon fluids are consumed, the fluid is apt, whcn'heated, .to become volatilized, and to exude from orifices and cracks in the burner so small as to be scarcely perceptible to the eye. At the point where the rod or pin for operating the rack or toothed wheel which is used to adjust the wick extends out 1 through the burner, the oil is particularly liable to escape, spreading thence over the sides of the lamp, so as not only to render the handling of the lamp disagreeable, but also to increase the danger of igniting and exploding of the fluid within the oil cistern or receptacle. So, also, in lamps where a jacketed wick-tube is employed, the vapor which gathers in the annular chamber which is formed by a partition around the tube, over the rack and pinion above mentioned, is apt to condense and fall to the bottom oi' thc chamber, whence it passes out through the orifices usually formed'in the base of the burner, and spreads over the sides of the lamp, rendering it disagreeable and offensive to the touch as well as to the smell. This is a serious inconvenience, and constitutes a great drawback to the use of these lamps, which are usually small hand-lamps, and are frequently handled.

The object of my invention is to remedy this difiiculty, and to do this I interpcse between the top of the tube and the rack, and its stem or handle, a deck or cap, which fits tightly over the lower partof the burner, and is depressed or sunken at the point where the wick-tube passes through it, so as to form aroundthe said tube a cup or receptacle which catches the condensed vapor or oil, directing it towards and holding it in contact with the heated tube, by which the fluid is again volatilized so as to mingle and pass up to the flame with the current of heated air within the jacket. By this means all communication between the upper and lower parts of the burner is cut oil, and the liquid contained within the annular chamber surrounding the wick-tube is directed towards the central point around the wick-tube, instead of being allowed, as is usually the case, to pass out through the perforations around the base of thechainber or to accumulate at a point or points remote from the most heated portions of the burner. 7

To enable others to understand my invention, I will now proceed to describe the manner in which the same is or may be carried into eflect by reference to the accompanying drawings.

The burner there shown consists of a wick-tube, a, and cup or lamp-cap, b, of ordinary form, which supports the tube and also the handle or stem 0 of the wick-adjusting rack d. The wick-tube is surrounded by a case or jacket, f, of ordinary or suitable construction, In the ordinary burner there is no preventive against the uninterrupted passage of the oil, which exudes from the upper end of the wick-tube, down along the tube and sides of the jacket and cap, and out through the orifice in the side of the cap through which the handle 0 extends, and consequently, when such burner is used, the lamp will be covered with oil which, besides being disagreeable to the touch, is liable to become ignited and thus cause the lamp at any time to explode. In order to remedy this defect, I interpose between the upper and lower parts of the wick-tube a deck or cap, it, which extends over the top of the cap 6, and is soldered or otherwise securely attached .thereto, and likewise to the wick-tube. The central portion of the cap, around the point where the wick-tube passes through it, is depressed so as to form a cup, as shown in fig. 2, the sides of which converge towards the wick-tube. The deck thus serves not only to support the tube and to shut off all communication in between the upper and lower parts of the burner, but catches the escaping oil or condensed vapor, preventing it from working its way out through the perforations n in the base of the jacket, and directs it towards the heated wick-tube where it will be again 'volatilized so as to min with the current of heated air passing up through the chamber to the flame. The deck instead of having the torn: shown in the drawings may have that of an inverted cone, its taper ng end surrounding the wiclrtubc, as in the present illustration, and its sides acting as deflectors to direct the fluid which is caught to the point where it may be again heated and vaporized. The lower end of the jacketfwhich surrounds the wick-tube is made flaring so as to be closed over the flange formed around the top of the cap 6, in

which position it is soldered or otherwise secured. Around the base of the jacket a series of perforations, n, is formed through which the air first passes, and after becoming heated in its passage up through the annular space above mentioned, is then fed to the flame. The upper end of the jacket is flush with the top of the wicktube, and near this end, below the top of the tube, a series of perforations, m, is form-ed, the effect of which, in connection with the lower perforations, is to greatly increase the brilliancy of the flame, and to produce a more perfect combustion of the fluid than could otherwise take place.

Having described my invention, and the manner in which the same is or may be carried into eil'ect, what I claim, and desire to secure by Letters Patent, is

The combination, with the jacketed wick-tube and rack for adjusting the wick, of the cap or deck forming the base of the jacket above the apertures through which the rack-pin passes, such deck being depressed so as to consitute a cup which gathers and holds the condensed vapor around and against the wick-tube, as and for the purposes herein described.

in testimony whereof I have signed my name to this specification before two subscribing Witnesses.

GEORGE NEILSON.

Witnesses:

L. S. ORAGIN, Jr., SUMNER ALBEE. 

